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Finding the Fourth Proportional to 455,954.64, 628,891.07 and 320,018.92

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Solution

The fourth proportional to 455,954.64, 628,891.07 and 320,018.92 is: 441,397.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,954.64 : 628,891.07 = 320,018.92 : x
  2. Step 2: Convert to fraction form
    455,954.64/628,891.07 = 320,018.92/x
  3. Step 3: Cross multiply
    455,954.64x = 628,891.07 × 320,018.92
  4. Step 4: Simplify right side
    455,954.64x = 201,257,041,019.04
  5. Step 5: Solve for x
    x = 201,257,041,019.04/455,954.64
  6. Step 6: Final answer
    x = 441,397.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.